A decadal record of inter-annual surface ice flow from Pedersenbreen, Svalbard (2005-15)

This study presents the fundamental surface-ice-flow features of Pedersenbreen, a Svalbard valley glacier, from yearly high-precision GPS observations during 2005–2015. Data analysis shows that surface horizontal velocities ranged from 6.45 to 7.98 m a−1 and that inter-annual velocity changes reache...

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Bibliographic Details
Published in:Polar Science
Format: Article in Journal/Newspaper
Language:English
Published: 2019
Subjects:
Ice-flow velocity
GPS
Ice pond
Water source
Glacier section
Svalbard
Pedersenbreen
glacier
Polar Science
Online Access:https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=15973
http://id.nii.ac.jp/1291/00015863/
Description
Summary:This study presents the fundamental surface-ice-flow features of Pedersenbreen, a Svalbard valley glacier, from yearly high-precision GPS observations during 2005–2015. Data analysis shows that surface horizontal velocities ranged from 6.45 to 7.98 m a−1 and that inter-annual velocity changes reached 12.37%; vertical velocities ranged from −0.65 to 0.26 m a−1 during the study period. The strain-rate results indicate that the glacier can be divided. into three sections. Flow variation was greatest in the highest section and very likely the source of winter runoff, which accumulated as an ice pond in front of the Pedersenbreen glacier tongue in 2014 and 2015.

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